Assortment of Questions...

Question
I have a few questions regarding my rabbit Wee Beasty. First of all, I can't figure out what kind of rabbit he is. He looks a lot like a rex rabbit although he doesn't have the bulge below the neck and his fur is long and sits flatly upon his back. He is very large. Second of all, I made him a small den kind of thing out of a cardboard box and some colored paper. I have planned to get him some chew toys, but in the meantime, is it okay that he chews through the box and paper? Also, on many of the websites I have visited, it has said to not feed rabbits any lettuce, cabbage, or leafy greens. On previous answers, however, it has said that that is good for them. Lastly, I have read a lot that it is not good for them to eat more treats (like lettuce and veggies) than pellets. My rabbit doesn't eat very much of the pellets, and if I try to reduce the amount of veggies I give him, he will get too skinny. More than half of his diet right now consists of greens. Is it okay to feed them fruits like apples?

Answer
Here's my assortment of answers.

Except for the first one, I'll have to punt on that one.  I'm not too good recognizing breeds unless it's one of the more obvious ones.  But this site has some pictures of the most common breeds, maybe it will help:
http://www.arba.net/photo.htm

As for his cardboard box, that is perfectly acceptable.  Many rabbits love cardboard boxes.  Both to sit in, sit on, dig in, and to chew up.  Cardboard boxes won't hurt them, and are often recommended toys.  I'm not sure about the colored paper, I just don't know what kind of ink is used.  But I suspect that it is ok, a lot of ink is now vegetable based.  If you have an old phone book, that makes a fabulous toy for many rabbits.  There's just something about them that channels a lot of their digging and shredding.  A list of some more toy ideas can be found here:
http://www.rabbit.org/faq/sections/toys.html

Now, the more confusing part, diet.  There's a lot of confusing info out there. The diet I follow is based on House Rabbit Society, veterinary resources, and other resources.  It's a base diet that is designed to be healthy and not cause health problems.  I tweak as needed for each individual rabbit.

The FAQ on the diet guideline is here:
http://www.rabbit.org/faq/sections/diet.html

But basically, it's a diet that is low in pellets, high in hay, and greens.  I always feed a pellet that is high in fiber.  At least 18% in fiber is recommended.  And no seeds or dried fruit in the pellet.

I feed 1 cup of greens for every 3 lb of rabbit.  I use this list to know most of the rabbit safe greens to feed:
http://www.rabbit.org/care/veggies.html

Fruits are ok in small doses.  They are a treat.  I personally feed them rarely.  This site has a list of good fruits for bunnies:
http://www.rabbit.org/care/fruits.html

On lettuce, the confusion may come from iceberg lettuce.  That type of lettuce isn't good for rabbits.  It has little nutritional value and can cause life threatening diarrhea.  But the green leafy lettuces like romaine are good for rabbits.  Some people think that cabbage causes gas, so I'd avoid that one, and there are plenty of other good green choices anyway.

The balance of pellets to greens should be perfectly fine, as pellets should be such a small part of the diet.     

If he's making nice shaped poops; that is not small, and hard, that helps you know if your diet is on track for your rabbit.

I hope this helps out